Выручайте!!! помогите пожалуйста с артиклями

1. The Browns are fond of music.
2. Do you collect differend cards?
3. Ted's uncle is a collector of stamps.
4. - Your aunt has a very good collection of Christmas cards.
    - Has she? I have never seen the collection.
5. There is a very interesting stamp in his collection.
6. What interesting stamps!
7. What an interesting stamp!
8. The stamp is very interesting.
9. What a funny collection!
10. What funny hobbies!